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Cryptographic algorithms rely on the secrecy of their corresponding keys. On embedded systems with standard CMOS chips, where secure permanent memory such as flash is not available as a key storage, the secret key can be derived from…

Physical Unclonable Functions (PUFs) leverage inherent, non-clonable physical randomness to generate unique input-output pairs, serving as secure fingerprints for cryptographic protocols like authentication. Quantum PUFs (QPUFs) extend this…

Disordered photonic structures are promising materials for the realization of physical unclonable functions (PUF), physical objects that can overcome the limitations of conventional digital security methods and that enable cryptographic…

Mesoscale and Nanoscale Physics · Physics 2023-03-06 Sara Nocentini , Ulrich Rührmair , Mauro Barni , Diederik S. Wiersma , Francesco Riboli

Quantum Physical Unclonable Functions (QPUFs) offer a physically grounded approach to secure authentication, extending the capabilities of classical PUFs. This review covers their theoretical foundations and key implementation challenges -…

Physical Unclonable Functions (PUFs) have emerged as a promising solution to identify and authenticate Integrated Circuits (ICs). In this paper, we propose a novel NAND-based Set-Reset (SR) Flip-flop (FF) PUF design for security enclosures…

Cryptography and Security · Computer Science 2019-09-17 Rohith Prasad Challa , Sheikh Ariful Islam , Srinivas Katkoori

We propose a theoretical framework to quantitatively describe Physical Unclonable Functions (PUFs), including extensions to quantum protocols, so-called Quantum Readout PUFs (QR-PUFs). (QR-) PUFs are physical systems with challenge-response…

Quantum Physics · Physics 2020-05-08 Giulio Gianfelici , Hermann Kampermann , Dagmar Bruß

Nowadays, due to the growing phenomenon of forgery in many fields, the interest in developing new anti-counterfeiting device and cryptography keys, based on the Physical Unclonable Functions (PUFs) paradigm, is widely increased. PUFs are…

Cryptography and Security · Computer Science 2026-03-06 Giuseppe Emanuele Lio , Mauro Daniel Luigi Bruno , Francesco Riboli , Sara Nocentini , Antonio Ferraro

A silicon physically unclonable function (PUF) is considered to be one of the key security system solutions for local devices in an era in which the internet is pervasive. Among many proposals, a PUF using ring oscillators (RO-PUF) has the…

Cryptography and Security · Computer Science 2017-07-07 Tetsufumi Tanamoto , Shinich Yasuda , Satoshi Takaya , Shinobu Fujita

Physical Unclonable Functions (PUFs) provide hardware-level security by exploiting intrinsic randomness to produce device-unique responses. However, machine learning and side-channel attacks increasingly undermine their classical…

Quantum Physics · Physics 2025-11-04 Mohammadreza Vali , Hossein Aghababa , Nasser Yazdani

We address security and privacy problems for digital devices and biometrics from an information-theoretic optimality perspective, where a secret key is generated for authentication, identification, message encryption/decryption, or secure…

Signal Processing · Electrical Eng. & Systems 2021-01-11 Onur Günlü , Rafael F. Schaefer

We consider a secret key agreement problem in which noisy physical unclonable function (PUF) outputs facilitate reliable, secure, and private key agreement with the help of public, noiseless, and authenticated storage. PUF outputs are…

Signal Processing · Electrical Eng. & Systems 2021-10-12 Onur Günlü , Rafael F. Schaefer , H. Vincent Poor

Information security is of great importance for modern society with all things connected. Physical unclonable function (PUF) as a promising hardware primitive has been intensively studied for information security. However, the widely…

Cryptography and Security · Computer Science 2021-09-09 Yongbiao Wan , Pidong Wang , Feng Huang , Jun Yuan , Dong Li , Kun Chen , Jianbin Kang , Qian Li , Taiping Zhang , Song Sun , Zhiguang Qiu , Yao Yao

The omnipresent digitalization trend has enabled a number of related malicious activities, ranging from data theft to disruption of businesses, counterfeiting of devices, and identity fraud, among others. Hence, it is essential to implement…

We present a practical and highly secure method for the authentication of chips based on a new concept for implementing strong Physical Unclonable Function (PUF) on field programmable gate arrays (FPGA). Its qualitatively novel feature is a…

Cryptography and Security · Computer Science 2016-10-14 Alexander Spenke , Ralph Breithaupt , Rainer Plaga

Physical Unclonable Functions (PUFs) are widely used in key generation, with each PUF cell typically producing one bit of data. To enable the extraction of longer keys, a new non-binary response generation scheme based on the…

Cryptography and Security · Computer Science 2024-10-29 Yonghong Bai , Zhiyuan Yan

Physical Unclonable Functions (PUFs) enable physical tamper protection for high-assurance devices without needing a continuous power supply that is active over the entire lifetime of the device. Several methods for PUF-based tamper…

Information Theory · Computer Science 2025-02-06 Georg Maringer , Matthias Hiller

We introduce a mathematical framework for simulating Hybrid Boolean Network (HBN) Physically Unclonable Functions (PUFs, HBN-PUFs). We verify that the model is able to reproduce the experimentally observed PUF statistics for uniqueness…

Cryptography and Security · Computer Science 2024-10-28 Noeloikeau Charlot , Daniel J. Gauthier , Daniel Canaday , Andrew Pomerance

Ring oscillators (ROs) are a robust way to implement a physical unclonable function (PUF) into ASICs or FPGAs, but claims of predictability arose recently. We describe why this likely results from not using adjacent ROs for pairwise…

Signal Processing · Electrical Eng. & Systems 2019-10-17 Florian Wilde , Matthias Hiller , Michael Pehl

One of the most common types of Physical Unclonable Functions (PUFs) is the ring oscillator PUF (RO-PUF), in which the output bits are obtained by comparing the oscillation frequencies of different ring oscillators. In this paper we design…

Cryptography and Security · Computer Science 2015-03-20 Shohreh Sharif Mansouri , Elena Dubrova

A physical unclonable function (PUF) generates hardware intrinsic volatile secrets by exploiting uncontrollable manufacturing randomness. Although PUFs provide the potential for lightweight and secure authentication for increasing numbers…

Cryptography and Security · Computer Science 2020-05-05 Yansong Gao , Marten van Dijk , Lei Xu , Wei Yang , Surya Nepal , Damith C. Ranasinghe